- Move Visual to the left rail, after Data Layers, Utilities and Authoring, and
  lead the right column with Context; an open Context or CCTV panel takes the
  column's full height. A switch in each panel header moves that side's panels
  over their rail to the screen edge, and the scroll wheel at a screen edge
  steps through that side's panels (manjunath22466, samehkhamis, #1735).